Provides a fallback for non-existing directories so that the HTML 5 history API can be used.

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1.5.16 years ago6 years agoMinified + gzip package size for connect-history-api-fallback-exclusions in KB



Middleware to proxy requests through a specified index page, useful for Single Page Applications that utilise the HTML5 History API.

Build Status Dependency Status

Table of Contents

- [index](#index)
- [rewrites](#rewrites)
- [exclusions](#exclusions)
- [verbose](#verbose)
- [htmlAcceptHeaders](#htmlacceptheaders)
- [disableDotRule](#disabledotrule)


NOTE: This is a fork of bripkens/connect-history-api-fallback. The primary reason for it is to a) update the library to ES6 and b) implement an exclusions option that will provide a list of URL paths that this library will ignore entirely.
Single Page Applications (SPA) typically only utilise one index file that is accessible by web browsers: usually index.html. Navigation in the application is then commonly handled using JavaScript with the help of the HTML5 History API. This results in issues when the user hits the refresh button or is directly accessing a page other than the landing page, e.g. /help or /help/online as the web server bypasses the index file to locate the file at this location. As your application is a SPA, the web server will fail trying to retrieve the file and return a 404 - Not Found message to the user.
This tiny middleware addresses some of the issues. Specifically, it will change the requested location to the index you specify (default being /index.html) whenever there is a request which fulfills the following criteria:
1. The request is a GET request 2. which accepts text/html, 3. is not a direct file request, i.e. the requested path does not contain a
`.` (DOT) character and
4. does not match a pattern provided in options.rewrites (see options below)


The middleware is available through NPM and can easily be added.
npm install --save connect-history-api-fallback

Import the library
var history = require('connect-history-api-fallback');

Now you only need to add the middleware to your application like so
var connect = require('connect');

var app = connect()

Of course you can also use this piece of middleware with express:
var express = require('express');

var app = express();


You can optionally pass options to the library when obtaining the middleware
var middleware = history({});


Override the index (default /index.html)
  index: '/default.html'


Override the index when the request url matches a regex pattern. You can either rewrite to a static string or use a function to transform the incoming request.
The following will rewrite a request that matches the /\/soccer/ pattern to /soccer.html.
  rewrites: [
    { from: /\/soccer/, to: '/soccer.html'}

Alternatively functions can be used to have more control over the rewrite process. For instance, the following listing shows how requests to /libs/jquery/jquery.1.12.0.min.js and the like can be routed to ./bower_components/libs/jquery/jquery.1.12.0.min.js. You can also make use of this if you have an API version in the URL path.
  rewrites: [
      from: /^\/libs\/.*$/,
      to: function(context) {
        return '/bower_components' + context.parsedUrl.pathname;

The function will always be called with a context object that has the following properties:
- parsedUrl: Information about the URL as provided by the URL module's url.parse. - match: An Array of matched results as provided by String.match(...). - request: The HTTP request object.


Exclude either absolute or partial urls from being rewritten. This is especially handy when dealing with API calls.
  exclusions: [


This middleware does not log any information by default. If you wish to activate logging, then you can do so via the verbose option or by specifying a logger function.
  verbose: true

Alternatively use your own logger
  logger: console.log.bind(console)


Override the default Accepts: headers that are queried when matching HTML content requests (Default: ['text/html', '*/*']).
  htmlAcceptHeaders: ['text/html', 'application/xhtml+xml']


Disables the dot rule mentioned above:
is not a direct file request, i.e. the requested path does not contain a . (DOT) character

  disableDotRule: true